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10 000 WATT FM BROADCAST TRANSMITTER
FM10
Page 5-29
01 October 2002
WARNING
(a)
Perform a visual inspection on the power
supply fan assemblies (A27 and A28) or the
rear, lower panel for fan blockage. If a
blockage exists, it will be necessary to remove
the fan assembly or lower, rear panel and clean
the obstructed air path or replace the fan, as
required.
Dangerous voltages exist on terminals of power
transformer A1T1. Ensure the
MAIN POWER
circuit breaker is turned
OFF
before attempting to
remove a fan assembly or the rear, lower panel.
(b)
Check fan fuses F6, F7 and F1 located on the
low voltage power supply PWB (A26A1). An
open circuit F6 or F7 will cause both fans in
the associated fan assembly to turn off. An
open circuit F1 will cause both fans on the rear,
lower panel to turn off.
5.11.15
RECTIFIER TEMPERATURE
ALARM:
A rectifier temperature alarm can occur if
the temperature of one of the rectifier assemblies (A2
or A3) exceeds 90
°
C. Trouble shoot a rectifier
temperature alarm as follows:
Ensure that the assembly in question has had
sufficient time to cool off before proceeding.
(a)
Perform a visual inspection on the power
supply fan assemblies (A27 and A28) and the
rectifier assemblies (A2 and A3) for fan
blockage.
(b)
Check fan fuses A1F6 and A1F7 located on the
low voltage power supply PWB. A failed fuse
will cause the two fans in a fan assembly to
turn off.
AIR FILTERS
5.12
Air filters should be inspected and cleaned
periodically using soap and warm water. If the air
filters become damaged, they should be replaced as
soon as possible.
NOTE
Two types of air cooling are available for use with
the FM10. In an open air system, the transmitter
will contain four air filters, located in the rear
(Nautel part number - HR51). In a closed air
system, the transmitter will contain one air filter,
located at the top (Nautel part number - HR39).
BACKUP BATTERY
5.13
The transmitter's control/monitor PWB
contains a battery backup circuit which provides a
memory of alarm occurrences during AC power
failure. The three batteries [Nautel Part Number -
BT23 (1.5 VDC)] are monitored by a
LOW BAT
lamp
on the control/monitor PWB. If the
LOW BAT
lamp
turns on during normal operation of the transmitter,
the batteries should be replaced as soon as possible.
Refer to the instructions given in section 4, paragraph
4.10.1 for Control/Monitor Backup Battery
Installation.
REPLACEMENT OF COAXIAL CABLES
5.14
Coaxial cables in the transmitter's RF
stage have been made using specific material and cut
to predetermined, and often frequency dependent
lengths. If it is required to replace one of these
coaxial cables, contact the factory.
Содержание FM10
Страница 41: ...10 000 WATT FM BROADCAST TRANSMITTER FM10 Page 2 15 01 October 2002 Figure 2 1 External Input Output Interface...
Страница 99: ...10 000 WATT FM BROADCAST TRANSMITTER FM10 Page 5 30 01 October 2002 Figure 5 2 Tuning Shelf Installation...
Страница 125: ...10 000 WATT FM BROADCAST TRANSMITTER FM10 Page 8 5 15 November 1999 This Page Intentionally Left Blank...
Страница 161: ...10 000 WATT FM BROADCAST TRANSMITTER FM10 Page 9 13 15 November 1999 This Page Intentionally Left Blank...
Страница 173: ...Figure SD 1 Electrical Schematic FM10 FM Broadcast Transmitter Overview Page SD 1 15 July 1997...
Страница 174: ...Figure SD 2 Electrical Schematic AC DC Power Supply Sheet 1 of 2 Page SD 2 15 July 1997...
Страница 175: ...Figure SD 3 Electrical Schematic AC DC Power Supply Sheet 2 of 2 Page SD 3 15 July 1997...
Страница 176: ...Figure SD 4 Electrical Schematic Low Voltage Power Supply PWB NAPS09C 01 Page SD 4 15 November 1999...
Страница 177: ...Figure SD 5 Electrical Schematic 3 Phase Monitor PWB NAPC60 03 Page SD 5 15 July 1997...
Страница 178: ...Figure SD 6 Electrical Schematic RF Power Stage Sheet 1 of 2 Page SD 6 15 July 1997...
Страница 179: ...Figure SD 7 Electrical Schematic RF Power Stage Sheet 2 of 2 Page SD 7 15 July 1997...
Страница 180: ...Figure SD 8 Electrical Schematic RF Combiner Final Filter NAF79 Page SD 8 15 July 1997...
Страница 181: ...Figure SD 9 Electrical Schematic Control Monitor Function Page SD 9 15 July 1997...
Страница 182: ...Figure SD 10 Electrical Schematic Control Display PWB NAPD05 01A Page SD 10 15 July 1997...
Страница 185: ...Figure MD 1 Assembly Detail FM10 FM Broadcast Transmitter Front View Page MD 1 15 July 1997...
Страница 186: ...Figure MD 2 Assembly Detail FM10 FM Broadcast Transmitter Rear View Page MD 2 15 July 1997...
Страница 187: ...Figure MD 3 Assembly Detail NASR92 02 and 03 AC Power Supply Assemblies Page MD 3 15 November 1999...
Страница 188: ...igure MD 4 Assembly Detail 3 Phase Rectifier Assembly 182 7150 and 182 7150 01 Page MD 4 15 July 1997...
Страница 189: ...Figure MD 5 Assembly Detail NAG02 01 NAG02 02 Circuit Breaker Panel Page MD 5 15 July 1997...
Страница 190: ...Figure MD 6 Assembly Detail NAC76 Power Supply Control Panel Page MD 6 15 July 1997...
Страница 191: ...F Figure MD 7 Assembly Detail NAC66 01A or NAC66 03 Control Monitor Panel Page MD 7 5 November 1999...
Страница 192: ...Figure MD 8 Assembly Detail NAPD05 01A Control Display PWB Page MD 8 15 July 1997...
Страница 193: ...Figure MD 9 Assembly Detail NAI07 Intermediate RF Drive Splitter Page MD 9 15 July 1997...
Страница 194: ...Figure MD 10 Assembly Detail NAFP68 IPA Input Power Probe Page MD 10 15 July 1997...
Страница 195: ...Figure MD 11 Assembly Detail NAF79 RF Combiner Filter and NAFP64 RF Power Probe Page MD 11 15 July 1997...
Страница 196: ...Figure MD 12A Assembly Detail NAS43 02 Low Voltage Power Supply Page MD 12A 15 July 1997...
Страница 197: ...Figure MD 12B Assembly Detail NAS43 02A Low Voltage Power Supply Page MD 12B 15 July 1997...
Страница 198: ...Figure MD 13 Assembly Detail NAPS09C 01 Low Voltage Power Supply PWB Page MD 13 15 November 1999...
Страница 199: ...Figure MD 14 Assembly Detail NAPC60 03 3 Phase Monitor PWB age MD 14 15 July 1997...
Страница 200: ...Figure MD 15 Dimensional Information FM10 10 000 Watt FM Broadcast Transmitter Page MD 15 15 July 1997...